Burn Rate
Runway Calculator
Know exactly how many months you have — and when to start your next fundraise.
Current Financials
Your Runway
Dynamic runway (with growth)
60+ months
6 months before runway ends
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How to Use This Tool
Enter your current cash balance and monthly burn rate (total expenses minus revenue). The calculator tells you how many months until you run out of money and when you need to start fundraising.
Runway Formula
Runway (months) = Cash Balance ÷ Monthly Net Burn
Net burn = monthly expenses minus monthly revenue. If you spend $200,000/month and earn $50,000/month, your net burn is $150,000. With $2,000,000 in the bank, you have ~13 months of runway.
Why This Matters
Running out of cash kills more startups than bad products. Fundraising typically takes 3–6 months, so you need to start raising when you have at least 9 months of runway left. Below 6 months, you're in a weak negotiating position and VCs know it.
Industry Benchmarks
Healthy Runway
18–24 months
Target after each fundraise
Start Fundraising
9–12 months
Begin the process here
Danger Zone
< 6 months
Weak negotiating position
What to Do With Your Results
- 1If runway is under 9 months, start fundraising immediately or cut burn.
- 2Model scenarios — what if revenue grows 20% per month? What if a key hire increases burn?
- 3Plan your fundraise — use the amount you need to extend runway to 18–24 months as your target raise.
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